APES Midterm Review

Which of these would most likely be a keystone species?

• Sea Otter
• Sea Urchin
• Kelp
• Horseshoe Crabs

Which of these is NOT true of an R selected species?

• They have large clutch sizes in reproduction. 
• They often show up early in succession.
• They often have gestation periods longer than 6 months. 
• They reach sexual maturity quickly and their mother's do not take care of them. 

Which of these would NOT be true of a specialist species?

• They are more likely to go extinct during changes to an ecosystem. 
• They have a very narrow niche.
• They often lose in competition for resources to generalists. 
• They often feed on a very specific diet. 

When a population changes in response to changes in another species, this is known as.....

• Coevolution
• Convergent Evolution
• Divergent Evolution
• Sympatric  Speciation

Introduced or invasive species are often difficult because:

• They contribute to habitat fragmentation
• They do not adapt well to new environments
• They increase biodiversity
• They often lack natural predators

Which is most likely to be an indicator species?

• tree frogs
• Rabbits
• Horseshoe crabs
• Sharks

A bird nests in a tree.  The tree does not gain any benefit and is not harmed.  What relationship best describes this:

• commensalism
• parasitism
• mutualism
• mimicry

Which is NOT an example of secondary succession?

• An abandoned baseball field becomes forest
• A farm is left and it becomes a prairie
• volcanic rock becomes tropical forests
• a forest regenerates after being lost to a large forest fire

Which of the following statements best describes how adaptations benefits an organism?

• It guarantees that the organism will survive
• It increases an organism's chances of survival
• It guarantees that an organism will have a stout beak
• It increases an organism's chance of becoming extinct 

The goal of every species on earth is...

• to survive and reproduce 
• divide and conquer 
• survive and conquer 
• reproduce and die